Access denied evaluating ANTS profiler

Hi,
I just installed ANTS profiler and when I try to profile my MVC application I get this:

Access is denied.

Description: An error occurred while accessing the resources required to serve this request. The server may not be configured for access to the requested URL.

Error message 401.2.: Unauthorized: Logon failed due to server configuration. Verify that you have permission to view this directory or page based on the credentials you supplied and the authentication methods enabled on the Web server. Contact the Web server's administrator for additional assistance.

Can I just check- are you profiling one of the listed sites from the provided drop-down menu, or do you use "Profile an application not shown in this list"?

If the former, can you please open the applicationhost.config file in %userprofile%\Documents\IISExpress\config in a text editor and make sure windowsAuthentication is enabled?

If the latter, ANTS creates a temporary config file to profile your site. You should be able to make it enable Windows Authentication by default by enabling it from the template applicationhost.config file in C:\Program Files\IIS Express\AppServer.